Drilling machine with split box



Jme 12, 1928,

G. W. GAGE DHILLING MACHINE WITH SPLIT BOX Filed June 7, 1926 v? e WHW@ V INVENTOR ATTORNEY WITNESS:

Patented .lune l2, 1928.

UNITED STATES PATENT OFFICE.

GEORGE WELLINGTON GAGE, OF PARNASSUS, PENNSYLVANIA.

DRILLING MACHINE WITH SPLIT BOX.

Application filed June 7,

This invention relates to improvements in drilling machines, the general object of the invention being to provide a double crank for operating the machine which is formed solid and to provide a split boxing for rotatably supporting the crank.

Another object of the invention is to provide improved means for transmitting the movement et the driven gear to the chuck member.

This invention also consists in certain other features oli' construction and in the coinbination and arrangement of the several parts, to be hereinafter fully described, il- .lustratec in the accompanying drawings and speciticelly pointed out in the appended claim.

ln describing my invention in detail7 reierence Will be had to the accompanying drawings wherein like cliaracters denote like or corresponding parts throughout the several views, and in lWhich:--

Figure 1 is an elevation of the device.

Figure 2 is a section on line 2---2 ot Figure 1.

In these views;` 1 and 2 indicate two halves of a. split boxing which 'forms a journal for a double crank El formed ot one piece ot material bent to form a crank handle ateach end thereof. After the central portion oit the. crank is placed between the tivo halves, the two halves are bolted together by the bolts 4. Each half is provided With al boss 5 on its outer tace, the boss of the section 2 receiving the threaded end of a stud` tl over Vwhich tits a tube 7 'which is provided Vwith several pairs of holes 8. any pair oit which is adapted to receive a bolt 9 which also passes through a hole in the stud. Thus the tube 7 is adjustably connected with the stud. A breast plate 10 is fastened to the outer end oilI the tube by the nuts 11. A stationary shaft 12 has its threaded end engaging the boss of section 1 and a tube 13 is held on the inner part of this shaft by a. washer 141- vvhich is held in place by a pin 15 passing through the shat't. A sleeve 16 is threaded to the outer end of the tube 13 and a set screw 17 locks the parts together. A chuck or tool carrying member 1S is threaded in the outer end of the sleeve 16 and a set screw 19 locks these parts together. Ball bearings 20 are arranged between the outer end of the shaft 12 and the inner end ot' the chuck '18, said chuck having a projection 21 on its inner end which engages a recess 22 1925. Serial No. 114:,321.

formed in the outer end ol the shaft. A beveled gear 23 is threaded to the inner end or' the tube 13 and is .locked thereto by the set screw 2l and this gear meshes with a similar gear 25 which is carried by the oranti shaft- A spring 52h encircles the sha'lt 3 and is held under tension by a collar 2i' held to the shait by u screw 28, this spring acting to hold the lirs in mesh. A handle is rotatably mounted on each end ot' the cranl; shalt by the nut 30.

From the foregoing. it will be seen that by rotating the crank shaft, the gear 25 will rotate the gear 225 and the movement oil this gear Q23 will be communicated to the chuck or bit carrying member .l through the tube 13 and the sleeve 16. i

rthe sha'lt, as bollore stated, is made in one piece and is placed in the boxing by separating` the two sections ot the boxing and then holtiug them together at'ter the shalt ha:` been put in place. The breast nlate adjuslablyr connected with the boni" betere stated. The shalt may he 'loruied in :fections. il' desired.

Thus l have produced a simple and eil"- ective drill7 mainly designed 'lor coal mines, the parts of Which can he easily assembled and adjusted to suit working conditions.

lt is thought troni the iloregoing description that the advantages and novel. -tentures of my invention will be readily appareni.

I desire it to be uuc'lers'tood that may make changes in the construction and in the combination and arrangement ol the several parts, provided that such changes Vfall Within the scope oi the appended claim.

llfhat l claim is:--

A drilling device ot the class described comprising a sectional honing, a crank shatt held between the sections of the sume. a :stein adjustably connected with the boxing` a breast plate carried thereby7 a stationary shaft carried by the honing. a tubular nymber thereon. a gear ou the tubular member, a gear on the crank sha lt nuishing' there- Willi, a sleeve connected with the tubular member and surrouiuling portion o'l the stationary shaft, a drill tairijving' member carried by the sleeve and anti-rriction means between the inner end ot the drill carrying member and the ou ter end of the stationary shaft.

In testimony whereof I attix my signature.

GEORGE WELLINGTON GAGE.

Ell) 

